HELP! Can I Be Pregnant?

[Ihavegreatproblems]

So, this isn't the first time I'm paranoid about this.. Last time I was so freaked out I might be pregnant, I've even told my mom, I'm still a virgen, never had sex before... I had various symptoms, so my mother bought me a pregnancy test, turned out negative... (If you're wondering why was I paranoid: I rubbed my BF's penis with my hand.. Over his pants,[he was a bit wet with prec*m] and when he left, I touched my Panty, too close to my entrance]....

But now, I just rubbed him (just a very little bit) over his pants, he was wet, but it has just a drop, it looked like a raindrop on his pants, later that night a masturbated and... Well... My paranoia is killing me now... I feel things.. (Like before... But less symptoms, and few times) ... So, could I be pregnant.?

By the way, before masturbating, I had dinner and washed my hands twice....